remove warning messages

src/bin/darkfid.rs

@@ -1,7 +1,7 @@
 use drk::blockchain::Rocks;
 use drk::cli::{Config, DarkfidCli, DarkfidConfig};
 use drk::util::join_config_path;
-use drk::wallet::{WalletApi, WalletDb};
+use drk::wallet::WalletDb;
 use drk::Result;
 
 use drk::client::Client;

src/client/client.rs

@@ -13,7 +13,6 @@ use crate::serial::Encodable;
 use crate::serial::{deserialize, Decodable};
 use crate::service::{CashierClient, GatewayClient, GatewaySlabsSubscriber};
 use crate::state::{state_transition, ProgramState, StateUpdate};
-use crate::wallet::WalletApi;
 use crate::wallet::WalletPtr;
 use crate::{tx, Result};
 

src/rpc/adapters/client_adapter.rs

@@ -2,7 +2,6 @@ use crate::client::{Client, ClientFailed};
 use crate::serial::serialize;
 use crate::service::CashierClient;
 use crate::{Error, Result};
-use crate::wallet::WalletApi;
 
 use jsonrpc_core::BoxFuture;
 use jsonrpc_derive::rpc;